I keep an unassigned device USB thumbdrive mounted as a nightly backup destination.
After upgrading to 6.9.0, and remaining with 6.9.1,  I noticed that unRAID is trying to spin it down every hour.

Any cause for concern, or any adjustment I could make to have that ignored?

Tnx

 

Mar 15 13:33:51 ED800 kernel: sd 1:0:0:0: [sdb] 125313283 512-byte logical blocks: (64.2 GB/59.8 GiB)
Mar 15 13:33:51 ED800 kernel: sd 1:0:0:0: [sdb] Write Protect is off
Mar 15 13:33:51 ED800 kernel: sd 1:0:0:0: [sdb] Mode Sense: 43 00 00 00
Mar 15 13:33:51 ED800 kernel: sd 1:0:0:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
Mar 15 13:33:51 ED800 kernel: sdb: sdb1
Mar 15 13:33:51 ED800 kernel: sd 1:0:0:0: [sdb] Attached SCSI removable disk
Mar 15 13:34:16 ED800 emhttpd: Samsung_Flash_Drive_FIT_0315220050002503-0:0 (sdb) 512 125313283
Mar 15 13:34:16 ED800 emhttpd: read SMART /dev/sdb
Mar 15 13:34:22 ED800 unassigned.devices: Adding disk '/dev/sdb1'...
Mar 15 13:34:22 ED800 unassigned.devices: Mount drive command: /sbin/mount -t exfat -o rw,auto,async,noatime,nodiratime,nodev,nosuid,umask=000 '/dev/sdb1' '/mnt/disks/unRAID_TD'
Mar 15 13:34:22 ED800 unassigned.devices: Successfully mounted '/dev/sdb1' on '/mnt/disks/unRAID_TD'.
Mar 15 14:34:25 ED800 emhttpd: spinning down /dev/sdb
Mar 15 15:34:26 ED800 emhttpd: spinning down /dev/sdb
Mar 15 16:34:27 ED800 emhttpd: spinning down /dev/sdb
Mar 15 17:34:28 ED800 emhttpd: spinning down /dev/sdb
Mar 15 18:34:29 ED800 emhttpd: spinning down /dev/sdb
Mar 15 19:34:30 ED800 emhttpd: spinning down /dev/sdb
Mar 15 20:34:31 ED800 emhttpd: spinning down /dev/sdb
Mar 15 21:34:32 ED800 emhttpd: spinning down /dev/sdb
.
.
.
Apr 3 08:20:23 ED800 emhttpd: spinning down /dev/sdb
Apr 3 09:20:24 ED800 emhttpd: spinning down /dev/sdb
Apr 3 10:20:25 ED800 emhttpd: spinning down /dev/sdb
Apr 3 11:20:26 ED800 emhttpd: spinning down /dev/sdb

 

Array and pool devices allow you to over-ride the global spin-down delay, but unassigned devices don't seem to have that option. Apart from the hourly entry in the syslog, I don't think it's a problem though. The spin-down command will just be ignored. If it bothers you, you could maybe file a 6.9.1 bug report, rating it as an Annoyance.